# Toolathlon-Verified → MCP Atlas

Calibration · https://benchgap.net/calibration/1537 · data retrieved 2026-10-29

MCP Atlas is estimated from Toolathlon-Verified with a Michaelis–Menten curve fitted on 11 models measured on both: y = 1.4626·x / (0.57698 + x), R² = 0.61, cross-validated error 7.8 pp. It is used for 2 estimates.

| Estimated model | Toolathlon-Verified | MCP Atlas | Source |
|---|---|---|---|
| [Claude Sonnet 5.5](https://benchgap.net/model/claude-sonnet-5-5.md) | 77.8% | 84.0% | estimated ± 7.8 pp, medium confidence |
| [Laguna S 2.1](https://benchgap.net/model/laguna-s-2-1.md) | 49.7% | 67.7% | estimated ± 7.8 pp, medium confidence |

## Fitted on

| Model | Toolathlon-Verified | MCP Atlas |
|---|---|---|
| [Claude Opus 5](https://benchgap.net/model/claude-opus-5.md) | 80.6% | 85.8% |
| [DeepSeek V4 Flash 0731](https://benchgap.net/model/deepseek-v4-flash-0731.md) | 70.3% | 69.0% |
| [DeepSeek V4 Pro 0813](https://benchgap.net/model/deepseek-v4-pro-0813.md) | 74.1% | 73.6% |
| [Hy4 preview](https://benchgap.net/model/hy4-preview.md) | 74.1% | 83.7% |
| [Inkling-Small](https://benchgap.net/model/inkling-small.md) | 54.4% | 79.6% |
| [Kimi K3](https://benchgap.net/model/kimi-k3.md) | 73.2% | 84.2% |
| [Muse Spark Open](https://benchgap.net/model/muse-spark-open.md) | 72.8% | 89.2% |
| [Ornith-1.5-35B-A3B](https://benchgap.net/model/ornith-1-5-35b-a3b.md) | 48.7% | 70.2% |
| [Ornith-1.5-397B](https://benchgap.net/model/ornith-1-5-397b.md) | 71.2% | 80.0% |
| [Ornith-1.5-9B](https://benchgap.net/model/ornith-1-5-9b.md) | 41.2% | 54.2% |
| [Step 5 Preview](https://benchgap.net/model/step-5-preview.md) | 74.1% | 85.6% |